diff options
Diffstat (limited to 'lib/Transforms/Utils/SimplifyCFG.cpp')
-rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index 21d156d1cc..fc84c4ab28 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1370,6 +1370,11 @@ static bool SinkThenElseCodeToEnd(BranchInst *BI1) { /// /// \returns true if the conditional block is removed. static bool SpeculativelyExecuteBB(BranchInst *BI, BasicBlock *BB1) { + // Be conservative for now. FP select instruction can often be expensive. + Value *BrCond = BI->getCondition(); + if (isa<FCmpInst>(BrCond)) + return false; + // Only speculatively execution a single instruction (not counting the // terminator) for now. Instruction *HInst = NULL; @@ -1409,11 +1414,6 @@ static bool SpeculativelyExecuteBB(BranchInst *BI, BasicBlock *BB1) { } } - // Be conservative for now. FP select instruction can often be expensive. - Value *BrCond = BI->getCondition(); - if (isa<FCmpInst>(BrCond)) - return false; - // If BB1 is actually on the false edge of the conditional branch, remember // to swap the select operands later. bool Invert = false; |